Date: Sun, 03 Nov 1996 18:24:20 -0800 From: "Jordan K. Hubbard" <jkh@time.cdrom.com> To: hardware@freebsd.org Subject: OK, what's the deal with 2940W controllers and internal connectors? Message-ID: <8387.847074260@time.cdrom.com>
next in thread | raw e-mail | index | archive | help
I just recently had a WIDE drive fall into my lap, so I finally started putting that WIDE connector on my 2940UW controller to good use. While reading the Adaptec controller docs before jumping in, I saw that it very specifically said to use only ONE of the internal connectors, either the WIDE or the narrow, but not both. You could still use the external connector for either kind of drive, but not hook both internal connectors up at once. Well, this made sense to me since it seemed like otherwise you'd have a "Y" configuration in your SCSI bus, and it wasn't clear which devices you'd terminate if you plugged both internal connectors in - each end of the Y, or what? So I hooked all my narrow devices to a 1542 controller I had lying around and life was good again, once I remembered to put BOUNCE_BUFFERS back in for it (feh). Then I was talking to Poul-Henning last night who pooh-pooh'd my foolish conservatism and stated that I could have used both internal connectors on my 2940UW no problem. Since I could use that 1542 as my spare again (which is why I have it), I'd sort of like to know which one of us is correct? :-) Jordan
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8387.847074260>